We use the natural zeolite clinoptilolite as the sensitive element in a plasticized PVC membrane: High Electron Mobility Transistor Research Paper, UM, Malaysia

University University of Michigan (UM)
Subject High Electron Mobility Transistor

We use the natural zeolite clinoptilolite as the sensitive element in a plasticized PVC membrane. Separated, a sample pool and a reference pool in a water-gated SnO2 thin-film transistor (SnO2 WGTFT) with such a membrane leads to membrane potential, and thus transistor threshold shift in response to the common drinking water pollutants Pb2þ or Cu2þ in the sample pool. Threshold shift with ion concentration, c, follows a Langmuir–Freundlich (LF) characteristic.

As the LF characteristic shows the steepest slope in the limit c → 0, this opens a window to limits-of-detection (LoDs) far below the ‘action levels’ of the ‘lead-and-copper rule’ for drinking water: Pb2þ: LoD 0.9 nM vs 72 nM action level, Cu2þ: LoD 14 nM vs 20.5 μM action level. LoDs are far lower than for membranes using organic macrocycles as their sensitive elements.

Threshold shifts at the lead and copper action levels are more significant than shifts in response to variations in the concentration of non-toxic co-cations, and we discuss in detail how to moderate interference. The selective response to lead and copper qualifies clinoptilolite-sensitized WGTFTs as a low-footprint sensor technology for monitoring the lead-and-copper rule and confirming the effectiveness of attempts to extract lead and copper from
water.

Are You Searching Answer of this Question? Request Malaysian Writers to Write a plagiarism Free Copy for You.

Get Help By Expert

Need to help with your homework in Malaysia? No need to worry, Malaysia Assignment Help! We understand the challenges students face in managing their coursework and meeting deadlines, which is why we offer expert help with assignments and homework in a wide range of subjects. Our team of experienced tutors and writers are dedicated to providing personalized support to each and every student, ensuring that you receive the help you need to achieve your academic goals. Contact us today to learn more about how we can help with your assignments and homework in Malaysia!

Answer

Recent Solved Questions

Online Exam & Assignment Writing Services

11770+ Orders Delivered

4.9/5
5 Star Rating

Confidential & Secure Assignment Help For

Group Assignment Help

Online Exam -Test & Quiz

Cheapest Price Quote

Diploma & Certificate Levels

Semester & FYP Papers

Summative & Individual

GBA & Reflective

Last Minute Assistance

Sample Assignment Download

ECE126 Introduction To C Programming Assignment Example UiTM Malaysia
C is a powerful programming language that has many applications in engineering. In this course, we'll explore how C works and its uses for solving problems like these. C is…
Computer & It
ASC305 Introduction To Actuarial Mathematics Assignment Sample UiTM Malaysia
ASC305 Introduction To Actuarial Mathematics is a great course for students who are looking to enter the actuarial profession. The course covers a wide range of topics, from probability theory…
Mathematics

UP TO 15 % DISCOUNT

Instant Paper Writing Services by Native Malaysia Writers

Plagiarism Free Solutions
100% Original Work
24*7 Online Assistance
Native PhD Experts
Hire a Writer Now

Get Assistance for Assignments, online Exam, and Projects Writing